Seeding rate and velocity influence on black oat (Avena strigosa Schreb.) growth, under no-tillage conditions
Keywords:
plant population, seeders, no-tillage, tillering, dry matter production.Abstract
An experiment under no-tillage conditions was carried out in São Gabriel/RS, to evaluate the influence of seeding rate (30, 60 and 90 kg/ha of viable seeds) and velocity (3,2; 5,3; 6,9; and 8,2 km/h) on black oat growth, which was submitted to a intensive cattle grazing. Number of tillers per plant and culms per m2 were affected by seeding rate, but not by seeding velocity. Before grazing, plant and principal culm dry matter such as total dry matter production were bigger for higher seeding velocities. Major total dry matter production was observed for seeding rates of 60 and 90 kg/ha. Higher seeding rates reduced leaf/culm ratio and plant, principal culm and tillers dry matter. After grazing, all variables were not influenced by the treatments, excepting plant dry matter, stature and number of tillers per plant and culms per m2.
Downloads
Downloads
How to Cite
Issue
Section
License
The authors declare that the work has not been previously published, nor sent simultaneously for publication in another journal and that they agree with the submission, content and transfer of the publication rights of the article in question to the scientific journal Pesquisa Agropecuária Gaúcha - PAG. The authors assume full responsibility for the originality of the article, and may incur on them any charges arising from claims by third parties in relation to the authorship of the article. The full reproduction of the journal's articles in other free-to-use electronic media is permitted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
